IEEE International Conference on Radar
2009 International Radar Conference "Surveillance for a Safer World" (RADAR 2009)
12-16 Oct. 2009
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The proceedings of this conference will be available for purchase through Curran Associates.
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Multiple target Doppler estimation under possibly moving radar clutter
Publication Year: 2009,Page(s):1 - 6
Multi-target detection for pulsed Doppler radars under land/moving clutter characterized by antenna scanning modulation is analyzed using linear prediction based Tufts-Kumaresan's method. Comparison between this method and other line spectra estimation algorithms such as MUSIC and ESPRIT is performed. A technique to determine the model order required by the frequency estimation algorithms, which d...Show More
Residual-based discrimination method of exoatmospheric active decoys
Publication Year: 2009,Page(s):1 - 6
Aiming at dealing with exoatmospheric active decoys, a residual-based discrimination method is proposed. Firstly, dynamics models of active decoys are derived theoretically and the inherent motion differences between warhead and decoys are analyzed. We point out that these motion differences can be reflected by maximum likelihood (ML) estimate residuals of initial state parameter. Secondly, for so...Show More
Modular design principles for missile defence early warning radar
Publication Year: 2009,Page(s):1 - 5
This paper focuses on the innovative architecture of the ground-based UHF Deployable Early Warning (DEW) radar. First, the early warning functions of the radar with the main requirements are presented. Then the surveillance principles and the global radar functional architecture are depicted. The central part of the paper shows how the mission requirements can be met through an innovative modular ...Show More
Mitigating the effect of direct signal interference in passive bistatic radar
Publication Year: 2009,Page(s):1 - 4
Cited by: Papers (2)
Passive bistatic radar uses target illuminations by transmitters of opportunity (often commercial broadcasts). Unfortunately, the strength of the direct signal interference (DSI) can often be so strong as to mask target returns. Furthermore, when illumination is provided by a DAB (Digital Audio Broadcasting) network, the problem can be exacerbated by several transmitters operating on the same freq...Show More
A novel moving target indication strategy for traffic monitoring using SAR
Publication Year: 2009,Page(s):1 - 5
This paper presents a novel moving target indicator which is selective with respect to a direction of interest. This selectivity may be useful for traffic monitoring in civil environments where the target area contains, simultaneously, traffic moving in several different directions, besides that of interest. The developed MTI obtains results more accurate than those obtained by the classical metho...Show More
Effects of wind power plants on passive radar operation
Publication Year: 2009,Page(s):1 - 5
Cited by: Papers (1)
SUMATRA, a W-band SAR for UAV application
Helmut Essen;Meinolf Bräutigam;Rainer Sommer;Alfred Wahlen;Winfried Johannes;Joern Wilcke;Michael Schlechtweg;Axel Tessmann
Publication Year: 2009,Page(s):1 - 4
Based upon most recent advances in millimeterwave technology, especially monolithic integrated low noise or medium power HEMT amplifiers and an integrated receiver containing an LNA, Mixer and IF Amplifier, a miniaturized experimental radar at 94 GHz was designed with the aim to be used on board of a remotely piloted model aircraft. This highly advanced front-end technique was combined with of-the...Show More
SAR image quality and calibration operations for the RADARSAT satellites at the Canadian Space Agency
Publication Year: 2009,Page(s):1 - 6
This paper describes the role of the Canadian Space Agency (CSA) in calibration monitoring activities of the SAR on-board the two RADARSAT satellites currently in orbit. First, the performance of the RADARSAT-1 SAR since commissioning in 1996 is reviewed, along with the calibration systems and methodologies in the context of the mission's eleven-year calibration history. Calibration monitoring act...Show More
GRADAR: A radar propagation modelling tool for frequencies from VHF to microwave
Publication Year: 2009,Page(s):1 - 4
Effective radar modeling requires consideration of the propagation effects of both surface topography and the atmosphere. This paper describes a propagation modeling tool that was developed to handle such effects. The tool is based on a Kirhhoff integral approach and the paper includes several examples that illustrate its capability. In particular, the paper shows that the approach can be very eff...Show More
Improving airborne radar performance using multiple conformal receive apertures
Richard Schneible;Yuhong Zhang;Abdelhak Hajjari;Braham Himed
Publication Year: 2009,Page(s):1 - 5
Cited by: Papers (1)
Adaptive airborne processing has mainly focused on planar arrays with equally spaced elements and equally spaced sub-apertures. However, current airborne platforms could provide greater capability with limited system impact, if their current radars were complemented with multiple receive-only conformal apertures. Because of aerodynamic constraints, these receive-only apertures must be unevenly spa...Show More
The Sentinel-1 radar mission: status and performance
Paul Snoeij;Evert Attema;Malcolm Davidson;Berthyl Duesmann;Nicolas Floury;Guido Levrini;Björn Rommen;Betlem Rosich
Publication Year: 2009,Page(s):1 - 6
Cited by: Papers (1)
The ESA Sentinels constitute the first series of operational satellites responding to the Earth Observation needs of the EU-ESA Global Monitoring for Environment and Security (GMES) programme. The GMES space component relies on existing and planned space assets as well as on new complementary developments by ESA. This paper describes the Sentinel-1 mission, an imaging synthetic aperture radar (SAR...Show More
Transient UWB radiation with beamforming capacity : Multielement array design
L. Desrumaux;A. Godard;V. Bertrand;J. Andrieu;M. Lalande;B. Jecko;P. Bruguière;M. Brishoual
Publication Year: 2009,Page(s):1 - 5
This paper deals with the architectures which can be envisaged with regard to antenna arrays for UWB applications. Firstly, the advantage of a system fed by n generators, in opposition with a system fed by one generator, is presented. Then, the system which permits an easy beam steering is the subject of an optimization study concerning the delivering of high power radiations. A technique making t...Show More
New results on convoy tracking by airborne radar. Part II: Tracking performance
Publication Year: 2009,Page(s):1 - 6
This paper deals with tracking of convoys by airborne radar. In [1, 2] a technique was presented to estimate the lateral length component of a convoy. In combination with the conventional range measurement, the full length information can be obtained in case of a linear convoy. The BAYES tracking algorithm presented in [1], which incorporates the length information, is now extended to multiple tar...Show More
Change detection for road condition mapping based on dry and rainy season VHR dual-pol radar imagery over tropical areas. Application to Chad
Kourdian Raphaël;Thierry Rousselin;Florianne François;Gilles Lerouge
Publication Year: 2009,Page(s):1 - 3
New Very High Resolution dual-polarization radar sensors in X-band (TerraSAR-X and Cosmo-Skymed) are offering technical opportunities for the detection of road condition changes between dry and rainy period in tropical areas. We applied classification methods (fuzzy logic and learning algorithms), multi-incidence and optical-radar combination in order to estimate surface elements (relief, flooded ...Show More
Low-observable target detection in sea clutter based on fractal-based variable step-size least mean square algorithm
Publication Year: 2009,Page(s):1 - 5
This paper introduces fractal-based variable step-size least mean square(FB-VSLMS) algorithm and proposes a model for radar target detection in sea clutter. FB-VSLMS algorithm deals with a specific class of fractal signals and except one parameter requiring time-varying constraints, the constraints on the remaining parameters are time-invariant. And the step-size matrix is determined completely wi...Show More
Range resolution of unequal strength targets
Publication Year: 2009,Page(s):1 - 5
Cited by: Papers (2)
This paper examines the problem of resolving targets whose amplitudes may differ. A common metric used for resolution that assumes targets of equal strength is modified for the subject scenario. An expression for range resolution that accounts for the difference in target strength is also developed. Computational results are presented to depict how resolution performance is affected by various par...Show More
A new pulse deinterleaving algorithm based on Multiple Hypothesis Tracking
Publication Year: 2009,Page(s):1 - 4
Cited by: Patents (1)
The main function of ESM is to receive, measure, deinterleave pulses and then identify alternative threaten emitters, among which pulse deinterleaving process is significantly difficult and important. Dense electromagnetic environments cause an ESM to receive a seemingly total random pulse stream with large noise. The traditional algorithms have behaved weak and unstable under the rather severe si...Show More
Oil films on the sea surface damp the capillary waves of the surface height spectrum. This hydrodynamic damping influences the normalized radar cross section (NRCS) of contaminated seas, comparatively to clean seas. First, a simple appropriate damping model is presented with parameters that match experimental results. Second, the two-dimensional bistatic NRCS of the contaminated sea surface is pre...Show More
Micro-Doppler analysis in ISAR - review and perspectives
Publication Year: 2009,Page(s):1 - 6
Cited by: Papers (3)
Micro-Doppler analysis concerns the extraction and exploitation of time-varying Doppler frequency shifts produced by mechanical oscillations of a target or target components. Examples of oscillatory motion include mechanical displacements or vibrations of target surfaces, rotations of target components, target spin, precession, or nutation. Such periodic motion modulates the Doppler frequency shif...Show More
Characterization of the performance of generalized monopulse estimation
Publication Year: 2009,Page(s):1 - 6
The generalized monopulse procedure is a tool to estimate parameters by maximizing a beamforming-type objective function. It can be applied to angle estimation (classical monopulse), but also to space-time array processing of any dimension. The performance of this procedure is characterized in this paper by conditional means and covariances for all models of target fluctuation (Swerling 0 to 4). F...Show More
Combining modern spectral estimation with Time-Frequency representation
P. R. Kersten;R. W. Jansen;T. L. Ainsworth;J. V. Toporkov;M. A. Sletten
Publication Year: 2009,Page(s):1 - 4
Cited by: Papers (1)
With Joint Time-Frequency Analysis (JTFA), one can estimate the speed of moving targets from Synthetic Aperture Radar (SAR) images. These targets are usually compact. JTFA estimation of water surface speeds is more difficult since the radar returns are weak and generated by Bragg scattering patches, randomly distributed within the radar's footprint, both in time and space. To increase the signal s...Show More
Study on the scattering characteristics of stable-stage wake vortices
Publication Year: 2009,Page(s):1 - 5
The present paper decomposes the study of wake vortex's scattering characteristics into three key problems. Based on the study of these three problems in detail, we obtained the scattering characteristics of the wake vortex, which include the frequency characteristic of RCS, the radiation pattern, the relation between RCS and the detection range, and the time evolution characteristic of RCS. Resea...Show More
Radar systems, operating for SAR (Synthetic Aperture Radar) for ground observation or for surveillance, need very high resolution. The achievement of very high resolution in the range of 15 cm or less, that enables stationary targets analysis, requires wide instantaneous bandwidth, accurate and programmable waveforms. On the other hand, low velocity moving targets to be discriminated from stationa...Show More
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